X9C303

Temperature under bias ...............-65°C to +135°C
Storage temperature ................... -65°C to +150°C
Voltage on CS, INC, U/D and V_CC
with respect to VSS ..................................-1V to +7V
Voltage on VH and VL
referenced to VSS..................................... -8V to +8V
∆V = |V_H - V_L| X9C303 .........................................10V
Lead temperature (soldering, 10 seconds)...+300°C
Wiper current....................................................±1mA
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The Intersil X9C303 is a digitally controlled potentiometer (XDCP). The X9C303 consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a threewire interface.

The  X9C303 resistor array is composed of 99 resistive elements. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS, U/D, andINC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation.

The X9C303 can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications ranging from control, to signal processing, to parameter adjustment. Digitallycontrolled potentiometers provide three powerful application advantages; (1) the variability and reliability of a solid-state potentiometer, (2) the flexibility of computer- based digital controls, and (3) the use of nonvolatile memory for potentiometer settings retention.